<http://schema.org/keywords>
"plumbing, sanitary, sewer, toilet, urinal, SANIT\u00C4R, toilette, Abwasserkanal, WASSER KLOSETT, toilettes, urinoir, fosse septique, banhos, casa de banho, WC, mict\u00F3rio"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bibliocad.com/library/block-isometric-for-residual-waters_4453>